KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 22. N:0 7. 141 



they are, according to what is said above, synonymous the former with Hyperia fera, 

 Dana, the latter with Themistella fusca, Dana. The eighth species Hyperia galba, Mon- 

 tagu, is not H. galba but H. Latreillei, H. Milne Edwards, though it must be remem- 

 bered that Spence Bate cited H. Latreillei as a synonym of his species. The ninth 

 species Hyperia Cyanew, Sabine, is certainly not identical Avith the species described by 

 Sabine, as I have had occasion to mention in a previous paper 1 ) but synonymous with 

 Euthemisto Nordenskioldi, C. Bovallius. As a synonym of Hyperia Cyanece he erroneously 

 cites ^Metoechus Cyanece, Milne Edwards, 1840», but this author says only that Talitrus 

 Cyanece, Sabine vsemble se rapprocher davantage des Metoeques, mais devra peut-etre former 

 un genre particulier.» The tenth species, Hyperia Medusarum, 0. Fabricius, and Kroeyer, 

 is possibly identical with 0. Fabricius' species, but certainly widely different from Kroe- 

 yer's, and most likely synonymous with H. galba, Montagu. The eleventh species, 

 Hyperia macrocephala, Dana, is above (p. 80) shown to be generically distinct from Hy- 

 peria and to be properly named Tauria macrocephala, Dana. The twelfth species, Hy- 

 peria agilis, Dana, is with regard to the description as well as to the drawing a copy 

 from Dana, and bears its proper name. The thirteenth species, Hyperia trigona, Dana, 

 is specifically different from Dana's species, but also a Parathemisto, recorded here below 

 as P. Batei, n. n. The fifteenth species Hyperia oblivia, Kroeyer, is not identical with 

 Kroeyer's species, and belongs not to Hyperia, but is a Parathemisto 2 ) given below 

 as P. gracilipes, Norman. The sixteenth, Hyperia pupa, Costa, is according to the very 

 incomplete description translated from Costa, very difficult to determine, but probably it 

 belongs, as mentioned above (p. 140), to the genus Themistella. The seventeenth and last 

 species Hyperia Lesueurii, Latreille, I have already supposed to be a synonym for 

 Hyperia medusarum, 0. F. Muller, and the description is a translation from Desmarest. 



The reasons for my transposition of the species of Spence Bate to the above spe- 

 cific names will be given below under each of these species. 



Fritz Muller in 1864 instituted the new species Hyperia Martinezii, but it is 

 proved above (p. 108), to be a Hyper oche. 



Goes in 1865 recorded Hyperia exulans, Kroeyer from Spitzbergen, but it is accord- 

 ing to my examination Hyperia Latreillei. He also mentioned a variety of H exulans, which 

 is the true Hyperia medusarum, 0. F. Muller; lastly he gave as H. medusarum, Kroeyer, 

 a species which is identical with Hyperoche Luetkeni, C. Bovallius, (see above, p. 88 and 90). 

 In the same year Costa 3 ) proposed the name Lestrigonus mediterraneus for a new species, but 

 with so few and insignificant characteristics that it is quite impossible to judge of its identity. 



In 1868 Spence Bate and Westwood enumerated the following British species of 

 Lestrigonus and Hyperia. Lestrigonus exulans, Kroeyer, == Hyperia galba, Montagu; 

 Lestrigonus Kinahani, Spence Bate, — Hyperia Latreillei, H. Milne Edwards; Hy- 



1 ) C. Bovallius. »Arctic and Antarctic Hyperids». Vega-Expeditionens Vetenskapliga Iakttagelser. Band 

 4, p. 561. 



2 ) In my »Systematical list of the Amphipoda Hyperiidea», (p. 21). I named it Parathemisto longipes not 

 being then aware of the fact that the Rev. A. Merle Norman as early as in 1869 in a footnote to his "Shetland 

 Final Dredging, Report, Part II», p. 287, had proposed for it the new name Hyperia gracilipes. 



3 ) Achille Costa. »Sopra una specie mediterranea del genere Lestrigonus. » Rendiconto dell Accademia 

 delle scienze fisiche e matematiche. Anno 4 t0 , p. 34. 



